51167367668 has 6 divisors (see below), whose sum is σ = 89542893426. Its totient is φ = 25583683832.

The previous prime is 51167367637. The next prime is 51167367731. The reversal of 51167367668 is 86676376115.

51167367668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 32500157284 + 18667210384 = 180278^2 + 136628^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6395920955 + ... + 6395920962.

It is an arithmetic number, because the mean of its divisors is an integer number (14923815571).

Almost surely, 2^51167367668 is an apocalyptic number.

It is an amenable number.

51167367668 is a deficient number, since it is larger than the sum of its proper divisors (38375525758).

51167367668 is a wasteful number, since it uses less digits than its factorization.

51167367668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12791841921 (or 12791841919 counting only the distinct ones).

The product of its digits is 7620480, while the sum is 56.

The spelling of 51167367668 in words is "fifty-one billion, one hundred sixty-seven million, three hundred sixty-seven thousand, six hundred sixty-eight".